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Adapting the
Willys Jeep L & F 134 Engines
to the
Dodge NP435 Transmission

This adapter assembly joins the Willys I4 engines - the L-Head 134 and F-Head 134 - to the Dodge NP435 four-speed transmission. This assembly is used to replace the T90A and T98 transmissions as found in 1945-1971 Jeep vehicles.

Adapting the Willys 134 Engine to the Dodge NP435
Kit 1435, adapting the Jeep Willys F & L 134 engines to the Dodge NP435 transmission
Part #: 1435
Weight: 14.60
Price: $548.00
Includes the adapter, clutch disc, pressure plate, release bearing, pilot bushing, fastening hardware, bearing retainer, selective gaskets, shims, fastening hardware and seal.

The Adapter
This plate style adapter is machined of a high-grade aluminum alloy, featuring an integrated precision machined bearing retainer. Included are the Jeep bellhousing locator / throwout sleeve, pilot bushing, seal and hardware.

The adapter is ~5/8" thick, and when used in conjunction with the Novak #432 adapter, makes for a ~14-7/8" long transmission package (bellhousing face to transfer case face).

NP435 Versions
The 435 only from Dodge trucks is compatible with this conversion, and only the more common tapered-front bearing (not the early roller ball bearing versions).

The Ford NP435 is not compatible with this conversion.

134 Bellhousings
The cast-iron 134 bellhousing is retained and used with this conversion. It requires no modifications apart from a simple thread clearancing operation with a drill.

Willys Jeep 134 to Transmission

The adapter is easily and quickly installed onto the 435. It will figure into your the adjustment of your 435 endplay and provisions and instructions are included.

Clutch Assembly
Your factory clutch release arm will be retained. Included in the kit are the new pressure plate, clutch disc, release bearing and pilot bushing. You can use your existing Jeep's factory style release system and pedal.

Transfer Case Adaptation
The NP435 will be used in conjunction with the Dana 18 transfer case in these Jeeps. This aspect of the conversion is discussed here.

Use of factory axles is completely acceptable with this conversion. Axle upgrades are not necessary, but they may be chosen for reasons external to this transmission upgrade.




134 Engine to NP435